Can I weld to a CF8M casting?
Can I weld to a CF8M casting?
(OP)
Guys I need some way to attach some type of a 304L/316L stainless forged pipe fitting, e.g. a weldolet or coupling, to a cast part. The part in question is the volute of a centrifugal pump.
Can I weld directly to the cast volute? I would like to use a SMAW stick procedure, position weld in the field, but I can TIG them on if I have to. What about some other method of attachment, e.g. brazing or silver solder? (Don't suggest J-B weld
)
Thanks for your help and ideas! Pete
Can I weld directly to the cast volute? I would like to use a SMAW stick procedure, position weld in the field, but I can TIG them on if I have to. What about some other method of attachment, e.g. brazing or silver solder? (Don't suggest J-B weld
Thanks for your help and ideas! Pete
Thanks!
Pete





RE: Can I weld to a CF8M casting?
No preheat, and keep the interpass temperature below 400 deg F. When you have finished welding, perform a Liquid penetrant test of the weld and surrounding base material.
RE: Can I weld to a CF8M casting?
Thanks!
Pete
RE: Can I weld to a CF8M casting?
Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
email: sayee_prasad@yahoo.com
If it moves, train it...if it doesn't move, calibrate it...if it isn't written down, it never happened!
RE: Can I weld to a CF8M casting?
Actually, CF8M only runs into ductility problems if the ferrite is too high and it has been exposed to high temperatures, changing the ferrite into sigma. Otherwise, it is very ductile. In most normal circumstances, it is very weldable and an austenitic stainless filler should work excellent. Are you sure you weren't working with a higher carbon/high temperature cast stainless steel?
RE: Can I weld to a CF8M casting?
GRoberts is correct, the problems we faced were with HK40 and not CF8M. CF8M is ductile and no weldability isuues.
Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
email: sayee_prasad@yahoo.com
If it moves, train it...if it doesn't move, calibrate it...if it isn't written down, it never happened!